Update controls for host/players

src/views/Lobby.vue

@@ -35,10 +35,13 @@
 				</button>
 			</div>
 		</div>
-		<div class="controls">
+		<div v-if="is_host" class="controls">
-			<button>Start Game</button>
+			<button v-if="is_host">Start Game</button>
 			<br>
-			<button>{{ is_host ? `Kill` : `Leave` }} Game</button>
+			<button>Kill Game</button>
+		</div>
+		<div v-else class="controls">
+			<button>Leave Game</button>
 		</div>
 	</div>
 </template>